Radio-Frequency Interference Identification Over Oceans for C- and X-Band AMSR2 Channels

Type Article
Date 2015-08
Language English
Author(s) Zabolotskikh Elizaveta1, Mitnik Leonid M.2, Chapron BertrandORCID3
Affiliation(s) 1 : Russian State Hydrometeorol Univ, Satellite Oceanog Lab, St Petersburg 195196, Russia.
2 : Russian Acad Sci, VI Ilichev Pacific Oceanol Inst, Far Eastern Branch, Vladivostok 690041, Russia.
3 : Inst Francais Rech Exploitat Mer, F-29280 Plouzane, France.
Source Ieee Geoscience And Remote Sensing Letters (1545-598X) (Ieee-inst Electrical Electronics Engineers Inc), 2015-08 , Vol. 12 , N. 8 , P. 1705-1709
DOI 10.1109/LGRS.2015.2420120
WOS© Times Cited 11
Keyword(s) Atmosphere, geophysical measurement techniques, oceans, passive microwave remote sensing, radio-frequency interference (RFI)
Abstract A new method for radio-frequency interference (RFI) contamination identification over open oceans for the two C-subbands and X-band of Advanced Microwave Scanning Radiometer 2 (AMSR2) channel measurements is suggested. The method is based both on the AMSR2 brightness temperature (T-B) modeling and on the analysis of AMSR2 measurements over oceans. The joint analysis of T-B spectral differences allowed to identify the relations between them and the limits of their variability, which are ensured by the changes in the environmental conditions. It was found that the constraints, based on the ratio of spectral differences, are more regionally and seasonally independent than the spectral differences themselves. Although not all possible RFI combinations are considered, the developed simple criteria can be used to detect most RFI-contaminated pixels over the World Ocean for AMSR2 measurements in two C-subbands and the X-band.
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